Pop, M.M., V.I. Studenyak, A.I. Pogodin, O.P. Kokhan, L.M. Suslikov, I.P. Studenyak, and P. Kúš. “Optical Properties of Cation-Substituted (Cu1 – xAgx)7GeSe5I Mixed Crystals”. Ukrainian Journal of Physics 66, no. 5 (May 28, 2021): 406. Accessed June 15, 2024. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2020130.